STRICT?

yesterday night i went to KayKay.. watching movie and whatever they called " the girls night out",.. (and definitely not clubbing).. hmmm...,, well,, after that,, we going back to the hostel (7.30 pm).. guess what? the bus are being stopped by the security and they are checking whether the students did brought the student ID.. luckily,, i did.. but a friend of mine did not bring the student ID and she were scolded by the security.. WTFish.. why does not they do the same before this?? i mean before the cases of RAPES occurs in our area..feels like i want to scold them back but don't have the guts to.. LOL!